36 Result(s)
within
Zhe** Yu
Characterization and Evaluation of Materials
Nanotechnology
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Article
Microstructure Evolution and Nanomechanical Behavior of Micro-Area in Molten Pool of Selective Laser Melting (CoCrNi)82Al9Ti9 High-Entropy Alloy
In this work, the phase evolution mechanism and nanomechanical properties of (CoCrNi)82Al9Ti9 high-entropy alloy (HEA) prepared by selective laser melting (SLM) in the molten pool were studied. This HEA contains ...
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Article
Dynamic magnetic and thermodynamic behaviors of edge-modified graphene-like nanoparticles in a time-dependent magnetic field
The dynamic magnetic and thermodynamic behaviors of the mixed-spin (1/2, 1, 3/2) Ising edge-modified graphene-like nanoparticles in a time-dependent magnetic field are studied by Monte Carlo simulation. The in...
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Article
A Micro-arc Oxidation/Poly(1,3-Trimethylene Carbonate) Hybrid Coating for Anticorrosion and Hemocompatibility Enhancement of High-Purity Magnesium
Magnesium (Mg) and its alloys possess good mechanical support and biodegradability, exhibiting enormous potential in the field of vascular stents. However, the rapid degradation results in premature loss of me...
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Article
Compression Behavior and Failure Mechanisms of Bionic Porous NiTi Structures Built via Selective Laser Melting
Inspired by the crystal microstructure of metals and the bamboo, the bionic porous NiTi structures with the porosities in the range of 75.8%–84.9% were built via selective laser melting (SLM). The compression ...
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Article
Open AccessUpconversion nanoparticle platform for efficient dendritic cell antigen delivery and simultaneous tracking
Upconversion nanoparticles (UCNPs) represent a group of NPs that can convert near-infrared (NIR) light into ultraviolet and visible light, thus possess deep tissue penetration power with less background fluore...
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Article
Turn-on colorimetric detection of hydroquinone based on Au/CuO nanocomposite nanozyme
CuO nanorods bearing Au nanoparticles (Au/CuO nanocomposites) were prepared by a solution-phase synthesis and exhibited efficient hydroquinone (HQ)-oxidase activity with good specificity. The Au/CuO nanocompos...
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Article
Size Effects on Dissolution Kinetics of Y-Enriched Precipitates in FeCrAlY Alloys During High-Temperature Oxidation
Our previous work demonstrated that the size of Y-enriched precipitates in FeCrAlY alloys have significant effects on their oxidation resistance. In the present work, the precipitate dissolution kinetics durin...
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Article
Machine Learning Hot Deformation Behavior of Nb Micro-alloyed Steels and Its Extrapolation to Dynamic Recrystallization Kinetics
In the present paper, a novel method was developed to predict the dynamic recrystallization (DRX) behavior during hot rolling based on machine learning in combination with physical models of niobium (Nb) micro...
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Article
Effect of grit blasting and subsequent heat treatment on stress rupture property of a Ni-based single-crystal superalloy SGX3
In the present study, the effect of grit blasting and subsequent heat treatment on the stress rupture properties of a third-generation nickel-based single-crystal superalloy SGX3 sheet was studied. It was foun...
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Article
Triaxial Constraint and Tensile Strength Enhancement in Brazed Joints
A brazed joint consists of a low-melting point and thin interlayer sandwiched between the high-melting-point base materials, in which the interlayer strength is typically lower than that of the base material. ...
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Article
Low-Cycle Fatigue and Creep-Fatigue Behaviors of a Second-Generation Nickel-Based Single-Crystal Superalloy at 760 °C
Low-cycle fatigue (LCF) behaviors of a second-generation nickel-based single-crystal superalloys with [001] orientation at 760 °C have been investigated. Different strain amplitudes were introduced to investig...
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Article
Enhancing High-Temperature Strength and Thermal Stability of Al2O3/Al Composites by High-Temperature Pre-treatment of Ultrafine Al Powders
Amorphous Al2O3-reinforced Al composite (am-Al2O3/Al) compacted from ultrafine Al powders for high-temperature usages confronts with drawbacks because crystallization of am-Al2O3 at high temperatures will result ...
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Article
Influence of Intercritical Temperature on the Microstructure and Mechanical Properties of 6.5 Pct Ni Steel Processed by Ultra-fast Cooling, Intercritical Quenching and Tempering
A novel treatment comprised of ultra-fast cooling, intercritical quenching and tempering is proposed to modify the microstructure and improve the mechanical properties of low-concentration Ni-containing steel ...
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Article
High-dimensional and high-resolution x-ray tomography for energy materials science
At the forefront of developments in synchrotron x-ray microscopy, nanoscale-resolution high-dimensional spectrotomography under controlled sample environments has been demonstrated. Such cutting-edge experimen...
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Article
Microstructural Evolution and Mechanical Properties of Nickel-Base Superalloy Brazed Joints Using a MPCA Filler
A new multi-principal-component alloy (MPCA) filler metal with the composition Fe5Co20Ni20Mn35Cu20 was designed for brazing Ni-base Alloy 600 (Ni-Cr-Fe). Thermodynamic calculations, including atomic size differen...
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Article
Evolution Mechanism of Inclusions in Medium-Manganese Steel by Mg Treatment with Different Aluminum Contents
To investigate the effect of magnesium addition on the evolution of inclusions in medium-manganese steel with different aluminum contents, both thermodynamic calculation and high-temperature simulation experim...
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Article
Enhancement on deformation uniformity of the target sheet by bulging process with magnetic medium and overlap** sheet
In the field of sheet forming, how to improve its performance is one of long-term goals. It is also an important basis for determining the quality and reliability of sheet forming. In this paper, the influence...
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Article
The time-dependent cellular response mechanism upon exposure to zinc oxide nanoparticles
Zinc oxide nanoparticle is one of the nanomaterials people engaged most in their life and its health effect has been taken into concern. In this work, A549 cell line was used as cell model, and the cytotoxicit...
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Article
Microstructure Evolution and Strain-Dependent Constitutive Modeling to Predict the Flow Behavior of 20Cr–24Ni–6Mo Super-Austenitic Stainless Steel During Hot Deformation
Hot compression tests were carried out with specimens of 20Cr–24Ni–6Mo super-austenitic stainless steel at strain rate from 0.01 to 10 s−1 in the temperature range from 950 to 1150 °C, and flow behavior was analy...
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Article
Origin of Insignificant Strengthening Effect of CNTs in T6-Treated CNT/6061Al Composites
Carbon nanotube (CNT)-reinforced 6061Al (CNT/6061Al) composites were fabricated via powder metallurgy combined with friction stir processing (FSP). CNTs were dispersed after FSP and accelerated the precipitati...
